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local QtCore = require 'qtcore'
local QtWebEngineCore = require 'qtwebenginecore'

local Class = QtCore.Class('WebUiHandler', QtWebEngineCore.QWebEngineUrlSchemeHandler) {}

-- local webUiOrigin = QtCore.QString('http://localhost/runtime/preview/examples/TransformCanvasPictures.html')
local webUiOrigin = QtCore.QString('webui://editor.evkworld.com/runtime/preview/examples/TransformCanvasPictures.html')
-- local webUiOrigin = QtCore.QString('webui:about')

function Class:__static_init()
	self.aboutUrl = QtCore.QUrl.fromUserInput(webUiOrigin)
	self.schemeName = QtCore.QByteArray 'webui'
	self.mime = QtCore.QMimeDatabase()
end

function Class:requestStarted(job)
	local method = job:requestMethod()
	local url = job:requestUrl()
	local initiator = job:initiator()

	method = method:toStdString()

	-- print('requestStarted'
	-- 	, method
	-- 	, url:scheme():toStdString()
	-- 	, url:host():toStdString()
	-- 	, url:path():toStdString()
	-- 	, url:fileName():toStdString()
	-- )
	local path = url:path():toStdString()

	if method == 'GET' then
		local file = QtCore.QFile('.' .. path, job)
		if file:open(QtCore.QIODevice.ReadOnly) then
			local mimeType = self.mime:mimeTypeForFile(url:fileName())
			job:reply(mimeType:name():toUtf8(), file)
		else
   			job:fail(QtWebEngineCore.QWebEngineUrlRequestJob.UrlNotFound)
		end
	-- elseif method == 'POST' then
	-- 	job:fail(QtWebEngineCore.QWebEngineUrlRequestJob.RequestAborted)
	-- 	-- QtCore.QCoreApplication.exit()
   	else
   		job:fail(QtWebEngineCore.QWebEngineUrlRequestJob.UrlNotFound)
	end
end

-- static
function Class.registerUrlScheme()
	local webUiScheme = QtWebEngineCore.QWebEngineUrlScheme(Class.schemeName)
	webUiScheme:setFlags(QtWebEngineCore.QWebEngineUrlScheme.SecureScheme
		+ QtWebEngineCore.QWebEngineUrlScheme.LocalScheme
		+ QtWebEngineCore.QWebEngineUrlScheme.LocalAccessAllowed
	)
	QtWebEngineCore.QWebEngineUrlScheme.registerScheme(webUiScheme)
end

return Class
